| 摘要 |
A security device and method of manufacturing a security device are provided in which at least one highly reflective area (20) is applied to at least one side of a substrate (12), the highly reflective area comprising a sinterable metallic particle or nanoparticle ink (18) including metal ions activated by a redox reaction to convert the metal ions to metal and sintered to form at least one highly reflective area. At least one relief structure, such as a diffractive or non-diffractive relief structure may be formed in the at least one highly reflective area on a first and/or second surface of the substrate, for example by embossing the metallic particle or nanoparticle ink or at least one transparent or translucent layer, which may be cured by radiation. |
